(The State Museum of Pennsylvania, Pennsylvania Historical and Museum Commission)

I

magine riding on horseback or hiking through the Allegheny Mountains of western Pennsylvania in the summer of 1835. A dusty road climbs through an ever narrowing ravine. You are surrounded by steep hillsides covered with towering hemlocks, many reaching over 100 feet high. A small stream, barely four feet across, tumbles down its shallow and rocky course alongside the road. Here, high in the mountains, the air is cool, despite the season, and a feeling of wilderness pervades.

As you round a bend in the road you notice the sound of heavy machinery--wheels turning, engines cranking, ropes straining. You see a cloud of dark smoke belching from an unseen smokestack somewhere on the hillside to your right. Then, through a break in the trees, you glimpse the front section of a boat slowly moving up the steep slope of the mountain! There cannot possibly be a river or canal in such a location. What is more, the boat appears to be moving up a steep grade under its own power. Clearly, an unusual event in Americas transportation history is under way.